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EMPLOYEE BENEFIT PLANS (Details 2) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Total |  |  |
Fair value of plan assets, by asset category |  |  |
Total | $ 149.2 | $ 126.0 |
Quoted Prices in Active Markets (Level 1) |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 117.2 | 95.7 |
Significant Observable Inputs (Level 2) |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 23.4 | 21.7 |
Significant Unobservable Inputs |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 8.6 | 8.6 |
Pension Benefits |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 149.2 | 126.0 | 137.9
Pension Benefits | Total | Cash |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 8.3 | 5.1 |
Pension Benefits | Total | U.S. large-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 53.8 | 50.2 |
Pension Benefits | Total | U.S. mid- and small-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 29.8 | 15.6 |
Pension Benefits | Total | International large-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 16.7 | 13.6 |
Pension Benefits | Total | International mid-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total |  | 11.2 |
Pension Benefits | Total | International small-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 4.3 |  |
Pension Benefits | Total | U.S. Treasuries |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 0.8 | 0.3 |
Pension Benefits | Total | Municipal bonds |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 0.2 | 0.1 |
Pension Benefits | Total | Investment grade U.S. corporate bonds |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 2.0 | 1.5 |
Pension Benefits | Total | High-yield U.S. corporate bonds |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 6.4 | 4.7 |
Pension Benefits | Total | Emerging markets fixed income |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 4.3 |  |
Pension Benefits | Total | Mortgage-backed securities |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 14.0 | 15.1 |
Pension Benefits | Total | Real estate partnerships interests |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 7.8 | 7.1 |
Pension Benefits | Total | Private equity partnership interests |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 0.8 | 0.8 |
Pension Benefits | Total | Insurance contracts |  |  |
Fair value of plan assets, by asset category |  |  |
Total |  | 0.7 |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | Cash |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 8.3 | 5.1 |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | U.S. large-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 53.8 | 50.2 |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | U.S. mid- and small-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 29.8 | 15.6 |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | International large-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 16.7 | 13.6 |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | International mid-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total |  | 11.2 |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | International small-cap |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 4.3 |  |
Pension Benefits | Quoted Prices in Active Markets (Level 1) | Emerging markets fixed income |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 4.3 |  |
Pension Benefits | Significant Observable Inputs (Level 2) | U.S. Treasuries |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 0.8 | 0.3 |
Pension Benefits | Significant Observable Inputs (Level 2) | Municipal bonds |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 0.2 | 0.1 |
Pension Benefits | Significant Observable Inputs (Level 2) | Investment grade U.S. corporate bonds |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 2.0 | 1.5 |
Pension Benefits | Significant Observable Inputs (Level 2) | High-yield U.S. corporate bonds |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 6.4 | 4.7 |
Pension Benefits | Significant Observable Inputs (Level 2) | Mortgage-backed securities |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 14.0 | 15.1 |
Pension Benefits | Significant Unobservable Inputs | Real estate partnerships interests |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 7.8 | 7.1 |
Pension Benefits | Significant Unobservable Inputs | Private equity partnership interests |  |  |
Fair value of plan assets, by asset category |  |  |
Total | 0.8 | 0.8 |
Pension Benefits | Significant Unobservable Inputs | Insurance contracts |  |  |
Fair value of plan assets, by asset category |  |  |
Total |  | $ 0.7 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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